diff --git a/check_source/check_spelling_c_config.py b/check_source/check_spelling_c_config.py
index 5570b84f5d373ec6b24d0c6a0ce39ff99ef58e6e..fd5a12ccb05cc0ca4087f21187dac54f7c25c05a 100644
--- a/check_source/check_spelling_c_config.py
+++ b/check_source/check_spelling_c_config.py
@@ -72,6 +72,7 @@ dict_custom = {
     "collinear",
     "comparator,",
     "comparators,",
+    "compilable",
     "confusticate",
     "confusticated",
     "constructability",
@@ -121,6 +122,7 @@ dict_custom = {
     "haptics",
     "highlightable",
     "homogenous",
+    "ideographic",
     "illuminant",
     "incrementation",
     "initializer",
@@ -139,7 +141,9 @@ dict_custom = {
     "jitteryness",
     "linkable",
     "luminances",
+    "mappable",
     "merchantability",
+    "mergeable",
     "minimalistic",
     "misconfiguration",
     "misconfigured",
@@ -198,12 +202,15 @@ dict_custom = {
     "rasterizes",
     "rasterizing",
     "rebalancing",
+    "recomputation",
     "recurse",
     "recursed",
     "recurses",
     "recursivity",
     "redistributions",
     "registerable",
+    "remappable",
+    "remapper",
     "remappings",
     "rendeder",
     "renderable",
@@ -216,6 +223,8 @@ dict_custom = {
     "reusability",
     "saveable",
     "schemas",
+    "serializers",
+    "sharpnesses",
     "sidedness",
     "skippable",
     "sortable",
@@ -263,6 +272,7 @@ dict_custom = {
     "untagging",
     "untrusted",
     "unvisited",
+    "userless",
     "vectorial",
     "vectorization",
     "vectorized",
@@ -344,6 +354,7 @@ dict_custom = {
     "foo",
     "hashable",
     "http",
+    "intelisense",
     "jitter",
     "jittering",
     "keymap",
@@ -439,6 +450,8 @@ dict_custom = {
     "look-dev",
     "mathutils",
     "obdata",
+    "userpref",
+    "userprefs",
 
     # Should have apostrophe but ignore for now unless we want to get really picky!
     "indices",